Windows Codex Canva connector OAuth callback launches Electron with invalid app path

What version of the Codex App are you using (From “About Codex” dialog)?

Codex Desktop: 26.527.31326

What subscription do you have?

PLUS

What platform is your computer?

Windows

What issue are you seeing?

Environment:

• OS: Windows
• Codex Desktop: 26.527.31326
• Microsoft Store/MSIX package observed: 26.527.3686.0
• Connector: Canva

Issue:
When connecting the Canva connector, the browser shows "Authorization Successful", but Codex does not complete the connector setup.

Immediately after OAuth success, Windows shows an Electron error:

"Error launching app"
"Unable to find Electron app at C:\Program ...\oauth_callback?code=..."
"Cannot find module 'C:\Program ...\oauth_callback?code=...'"

Expected:
Codex should receive the OAuth callback and mark the Canva connector accessible. Canva tools should be injected into Codex.

Actual:
The connector remains inaccessible:

• Canva connector remains isAccessible=false
• Canva appears as installable connector
• Canva search/create/edit tools are not injected into the Codex tool list

Notes:
It looks like the OAuth callback URL is being interpreted as part of the Electron app path instead of being passed as a callback/deep-link argument. The callback code is appended after C:\Program..., causing Electron to search for a non-existent app/module path.

I can reproduce after restarting Codex.

What steps can reproduce the bug?

<img width="573" height="293" alt="Image" src="https://github.com/user-attachments/assets/ab278e81-be19-4239-9401-cfdc2faa37b0" />

What is the expected behavior?

_No response_

Additional information

<img width="573" height="293" alt="Image" src="https://github.com/user-attachments/assets/c40078d3-ca9f-4376-bad9-897f544fd9d3" />